A hut is perfect! Here are some links that I found onlineso you can get some ideas. I hope they help.http://cakestodays.com/wp-content/uploads/2011/01/luau-birthday-cake.jpghttp://www.lovelaughtercake.com/wp-content/uploads/2012/02/Hawaii-Page-037-1024x666.jpghttp://cmnycakes.com/gallery2/d/17070-7/Sweet+16+Hawaiian+Themed+Cake